I've been using the modius for a couple of months. I'd been going to a slimming club and progress was consistent but slow. Since I've been using the modius my fortnightly weight loss has increased. It's a very simple to use piece of equipment. When I first use it, I get a feeling like I'm going over a humped back bridge in a car . My stomach goes over slightly but this only lasts a minute or so per session. It's now part of my morning routine and I'll happily keep using it until I reach my target weight which hopefully will be sooner with regular use of my headset.